AcademySoftwareFoundation/OpenImageIO v3.1.14.0

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Release 3.1.14.0 (Jun 1, 2026) -- compared to 3.1.13.1

• oiiotool: New --nchannels flag for parity with maketx. #5198 (by Danny Greenstein)
• oiiotool: Commands taking offsets or geometry arguments now accept a more flexible offset notation with commas as alternative separators (e.g., X,Y or WxH,X,Y in addition to the X11-style +X+Y form). This affects --create, --crop, --cut, --fit, --fullsize, --origin, --originoffset, --paste, --pattern, --printstats, --resize. #5209
• oiiotool: Be more cautious about implicit promotion to float when --autocc is used alongside explicit color space names. #5192
• color mgmt: For OCIO built-in configs, replace the default file rules with more sensible ones that avoid spurious matches (e.g., no longer assumes all .exr files use ACES2065-1 primaries). #5194
• iconvert: Allow -o outfile for output file designation, for parity with oiiotool syntax. #5173
• ColorConfig: New isData() API method to query if a color space is a data space; fix Python isColorSpaceLinear(). #5191
• ustring.h: Allow freeing the ustring table via OIIO::attribute("ustring:cleanup", 1) or env var OIIO_USTRING_CLEANUP=1, useful for suppressing false positives in memory leak detection tools. #5213
• dicom: Enforce reasonable resolution limits to guard against corrupt files. #5167 (3.0.19.0)
• gif: Preserve RGB values of transparent-indexed pixels (previously only alpha was set, zeroing the RGB channels). #5188 (by Lumina Wang)
• jpeg: More correctly handle bounds checks for malformed APP1 Exif and APP2 ICC metadata markers. #5174 (by Vlad Erium)
• jpeg-xl: Enforce format resolution limits for better detection of corrupt or invalid files. #5202 (by Hannah Gulka)
• jpeg-xl,pnm: Prevent readers from loading or allocating memory for arbitrarily large non-image files. #5203 (by Maxwell Iverson) (3.0.19.0)
• psd: Fix indexed transparency. #5177 (by Vlad Erium)
• softimage: Fix possible small allocation leak in RLE decoder. #5182
• webp: Fix bounds handling for WebP EXIF metadata chunks. #5175 (by Vlad Erium)
• webp: Enforce format resolution limits for better detection of corrupt or invalid files. #5202 (by Hannah Gulka)
• filesystem.h: Speedup various file system operations on Windows using native APIs. #5199 (by Lumina Wang)
• build: Remove -Wno-unused-result from gcc compile options, surfacing more potential warnings. #5214 (by Luna Kim)
• ci: Fix broken CI by locking down aswf container for 2023 #5200; remove deprecated windows-2025 runner #5189 (3.0.19.0)
• admin: Add CVE-2024-55194 (long since fixed) to security alerts. #5216
• Contributors: First-time contributors to this release: Hannah Gulka, Luna Kim, Marta Feriani, Maxwell Iverson.